This document was approved by NOAA on July 1, 2015. Click here to view the approval letter from NOAA. If you have any questions on this document, please contact Leo Asuncion at leo.r.asuncion@hawaii.gov or (808) 587-2846.

This Onsite Wastewater Treatment Survey and Assessment document, sponsored by the State Department of Health (DOH) and the CZM Program, provides information on the capabilities and limitations of onsite wastewater systems, as well as factors to consider in the selection of an appropriate onsite wastewater system for a given site in Hawaii. This information is intended to promote effective wastewater treatment in rural settings so that ground and surface water resources, coastal water quality, and coastal habitats are protected from wastewater contamination.

Readers are encouraged to review Chapter 11-62, Hawaii Administrative Rules pertaining to individual wastewater systems, and to discuss their options with DOH staff and consult with a professional engineer prior to attempting to select an onsite wastewater treatment system for a particular site.